<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org"
      xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div th:if="${param.error}">用户名或密码错误</div>
<div th:if="${param.logout}">您已注销</div>
    <form th:action="@{/login}" method="post">
    <div>
        <label>
            用户名<input type="text" name="username"/>
        </label>
    </div>
        <div>
            <label>
                密码<input type="password" name="password"/>
            </label>
        </div>
    </form>
</body>
</html>